Window-screen.



l PATBNTBD MAY 12, 1903. ELL. LLOYD. WINDOW SCREEN. APPLIoATIoN FILEDSEPT. 1o. 1902 2 snBn'Ts-SHBBT 1.

No MODEL.

ma Ncmms PETERS e0. Pnmounm. wAsmncroN, o cv PATBNTBD MAY I2; 1903;;

E. L. LLQYD. WINDOW SCREEN..

' APPLICATION FILED SEPT. 10, 1902.

no MODEL.

Patented I VIay 12, 1903.

PATENT OFFICE.

EDWIN L. LLOYD, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW-SCREEN.

SPECIFIATION forming part of Letters Patent No. 728,121, dated May 12,1903. Application filed September 10, 1902. Serial No. 122,840. I (Nomodel.)

To all whom it may concern:

Be it known that I, EDWIN L. LLOYD, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in VVindow-Screens, of which the following is aspeciicati-on.

My invention relates to that class of window-screens which are appliedto the win dowframe alongside of the sash instead of between the bottomof the sash and the sill, the lower bar of the sash bearing against theface of the top bar of the screen when the sash is raised, so as to forma close joint therewith and prevent the passage of insects between thetwo.

One object of my invention is to construct .a screen of this class whichis applicable to window-frames ot' different Widths, other objects beingto rmly guide the adjustable eX- pansion-stripsrof the screen, to rendersaid expansionstrips self-expanding, and to produce a screen which willpresent a-neat appearance, the netting being wholly unob- -structed andthe springs which effect the pro`l jection ofthe expansionv bars orstrips being vconcealed from sight and protected from ex- ,posure to theweather.

In the accompanying drawings, Figure 1 is' .a face view, partly insection, of a windowscreen constructedin accordance with my invention.Fig. 2 is a top or plan view of the same, illustrating also .the groovedguides vor .retainers on the windowfframe to which the screen isadapted. Fig. k3 .is a section on the .linea o, Fig. 1. Fig. 4 is anenlarged transverse section on the line I? b, Fig. 1. Fig..5

c c, Fig. 1.

Fig. 7 is a transverse section on the line ld d,

- Fig. e.

. Referring first to the screen shown in Figs. .1 to 5, itwill be notedthat the fixed frame -of the screen comprises end bars 1 1, top and'bottom bars 2 2,.and supplementary top and bottom vbars 2-- 2, and eachof the adjustable end framesvof the screen-.comprises an eX-fpansion-strip 3 and guiding joint forming -bars 4 4, secured lto andprojecting inwardly from said strip 3 at the top and bottom of thescreen. The netting 5 is secured to the bars .l and 2 of the fixedframe, the expansionstrips 3 overlapping `the netting at the ends of theframe, so as to slide freely back and forth'over the same.

The supplementary top and bottom bars 2' of the fixed framehavelongitudinal grooves 6 formed therein for the reception ot' ribs 7on the bars 4, which bars are in contact with the top and bottom bars 2of the lfixed frame, as shown in Fig. 1. The inwardly-projecting rib-ofeach bar 4 has formed in it a longitudinal slot 8 for the reception of avertical pin 9, carried bythe bar 2, this pin-and-slot connectionpreventing either the lateral or longitudinal removal of the slidingframes of the screen from the fixed frame of the same and also limitingthe extent to which the sliding frames can be projected, contact of they'inner ends of the top and bottom bars 4 of the sliding frames limitingthe approach of inner end against'a' blockul2, secured to the bar 2a ofthe fixed frame of the screen, 'the springs 11 serving to project thebars 4 and the end strips 3 carried thereby to the full extent permittedby the contact of the pins 9 and blocks 12 with the shoulders at vtheinner ends of the slots 8 and 10.

The screen may be held in position in the window-frame by frictionalcontact of the end strips 3 with the sides of the window-frame; but itis preferable to provide said windowframe with grooved guide-bars 13 forthe reception and guidance of the strips 3, as shown in Fig..2, the topand bottom bars 4 of the sliding frames being in this case cut away attheir outer ends, as shown in Figs. 1 and 2, in order to permit theguides to properlyoverlap the strips 3.

,In assembling the parts of the screen the netting is ,first appliedtothebars I and 2 of the fixed frame, and the top and bottom'bars 2a arethen secured to the bars 2. The springs 11 and blocks 12 are theninserted in the slots 10 of the ribs 47, and said ribsareslidlongitudinally into-the Agrooves .,fof 'the@fears 2a until the innerends of the bars 4 meet at the center of the screen, the strips 3 beingthen fully retracted. The blocks 12 are then Secured to the bars 2a,preferably by nails or pins 14, and the pins 9 are inserted in properposition for restricting the expansion of the sliding frames of thescreen by contact with the shoulders at the inner ends of the slot 8.The assembling of the parts ofthe screen can thus be quickly effectedwithout the employment of skilled labor, thereby reducing the cost ofthis element of manufacture.

It' the ribs 7 of the bars 4: are beveled or undercut, the use of thepins 9 and slots 8 can be dispensed with, the projection of the endstrips 3 being limited by contaetpf the shoulders at the inner ends ofthe slots 10 with the blocks 12 or with the pins 14c when said block isnot used. In some cases the screen can be made with an expansion-stripat one end only; but the construction shown is preferred.

The screen presents a very neat appearance, the netting is unobstructedthroughout the entire area of the screen, and the various springs whicheffect the expansion of the movable elements ofthe screen-frame and thestops for limiting such expansion are hidden from View and protectedfrom access, so that they cannot be tampered with by ignorant ormischievous persons or injured by exposure to the weather. The screen,moreover, is strong and durable, the long top and bottom bars 4 of themovable members of the screenframe providing an efficient support forsaid movable members ofthe frame upon the xed frame, whereby theexpansion-strips 3 at the ends of the screen are firmly guided in theirmovements and cannot be warped or twisted out of their proper position.Hence the free sliding movement of these expansion-bars is neverinterfered with.

When the screen is applied to the windowframe, the bars 2 and 4: at thetop of the frame bear against the lower rail of the sash, as shown inFig. 4, the bars 2 bridging the gap between the separated inner ends ot'the bars i and said bars 4 lling the space between the rail of the sashand the expansion-strips 3, Where the latter are projected beyond thebars l of the fixed frame at the ends of the screen, a close joint beingthus produced and the passage of insects between the sash-frame and thebars of the screen etectually prevented.

In that embodiment of my invention shown in Figs. 6 and 7 a wire 4:3 isused in place of the bar 4*, this wire 4E being secured to the end strip3 and adapted to a groove 6, formed in the bar 2 of the fixed frame. Aspring ll, contained in the groove, acts upon a lug l5, projecting fromthe wire, and thus serves to project the end strip 3.

Having thus described my invention, I

claim and desire to secure by Letters Pat- 1. The combination of thefixed frame of the screen having a bar with a groove in one of its sidefaces and an expansion end strip having aguiding andjointformingbaradapted to said groove and fiush with that face of thescreen-frame bar in which the groove is formed, substantially asspecified.

2. The combination of the fixed frame of the screen having a bar with agroove in one of its side faces, an expansion end strip having a guidingand joint-forming bar adapted to said groove and fiush with that face ofthe screen-frame bar in which tbegroove is formed, and a spring actingupon said guidebar so as to project the end strip, substantially asspecified.

3. The combination of the iiXed frame of the screen having a bar with agroove in one of its side faces, an expansion end strip having a guidingand joint-forming bar adapted to said groove and flush with that face ofthe screen-frame bar in which the groove is formed, and a pin-andslotconnection between said guide-bar and the bar of the fixed frame wherebythe two are laterally confined tgether, substantially as specified.

4. The combination of the fixed frame of the screen having a bar withgroove in one of its side faces, the expansion end strip having aguiding and joint-forming bar adapted to said groove and flush with theface of the screen-frame bar in which the groove is formed, said barhaving aslot therein, a spring contained in said slot and a bearing forsaid spring carried by the bar of the fixed frame, substantially asspecified.

5. The combination of the fixed frame of the screen having a barcomposed of two parts confining the netting between them, one part beingless in height than the other and the other part having in itsprojecting portion a face-groove,an expansion-strip provided with a barbearing against the face of said projecting bar, and having a projectingrib adapted to the groove therein, said guide-bar being also flush withthe face of the other bar of the frame, and means for laterallyconfining said expansion-strip bar to the bar of the screen-frame,substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWIN L. LLOYD.

Witnesses:

MURRAY C. BOYER, Jos. I-I. KLEIN.

lCO

